TO THE PROBLEM OF APPLICATION OF NANOCLUSTERS Ag-Cu IN PLASMONICS

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Abstract

The magnitude of the localized surface plasmon resonance (LSPR) in metal nanoparticles is determined by many factors. Thus, with an increase in their average linear size, the maximum position of the LSPR peak shifts towards long waves. However, the position of the LSPR maximum is affected to a greater extent by the material of the nanoparticles. Changing the average particle diameter from D = 7 nm to D = 60 nm makes it possible to vary the position of the LSPR maximum in the range of about 50 nm. However, with a smooth change in the composition of binary nanoparticles, it can already be varied within about 120 nm. Therefore, copper-silver alloy nanoparticles are of great practical interest due to the possibility of fine-tuning the plasmonic effects present in them by changing the composition, size, shape, and structure of the nanoparticles. Based on the results of the analysis of the available experimental data, it was concluded that it is possible to control the internal structure and shape of Ag - Cu nanoparticles in order to shift the plasmon resonance peak and enhance it.

About the authors

Svetlana L. Gafner

Katanov Khakass State University

Email: sgafner@rambler.RUS
Abakan, Russia

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